<?xml version="1.0"?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <title>Rectangles</title>
  <script type="text/javascript">
    function appendMessage(message) {
      document.getElementById('result').innerHTML += message
        + " ";
    }
  </script>
  <style type="text/css">
    #r1 {
      position: absolute;
      background-color: lightblue;
      left: 100px;
      top: 100px;
      width: 100px;
      height: 50px;
    }
    #r2 {
      position: absolute;
      background-color: red;
      left: 2500px;
      top: 50px;
      width: 80px;
      height: 50px;
    }
    #r3 {
      position: absolute;
      background-color: yellow;
      left: 60px;
      top: 1500px;
      width: 80px;
      height: 50px;
    }
    #r4 {
      position: absolute;
      background-color: cyan;
      left: 220px;
      top: 180px;
      width: 100px;
      height: 50px;
    }
    #r5 {
      position: absolute;
      background-color: blue;
      left: 60px;
      top: 1600px;
      width: 80px;
      height: 50px;
    }
    #r6 {
      position: absolute;
      background-color: green;
      left: 2581px;
      top: 50px;
      width: 80px;
      height: 50px;
    }
    #result {
      border: 10;
      padding: 5;
      background-color: grey;
      position: absolute;
      left: 20px;
      top: 30px;
      width: 400px;
      height: 20px;
    }
    </style>
</head>
<body>
  <div id="result"></div>
  <div id="r1" onclick="appendMessage('First')">First Target</div>
  <div id="r2" onclick="appendMessage('Second')">Second Target</div>
  <div id="r3" onclick="appendMessage('Third')">Third Target</div>
  <div id="r4" onclick="appendMessage('Fourth')">Fourth Target</div>
  <div id="r5" onclick="appendMessage('OOPS2')">Not a Target</div>
  <div id="r6" onclick="appendMessage('OOPS')">Not a Target</div>
</body>
</html>
